Leaked Slide Highlights Intel's Barlow Pass Optane DC Persistent Memory
This is something Intel has already detailed to some extent. Barlow Pass succeeds Apache Pass, Intel's first generation Optane DC persistent memory that pairs with Cascade Lake-SP processors. We already know that Barlow Pass is slated to arrive this year, in conjunction with Intel's 14nm Cooper Lake and 10nm Ice Lake Xeon processors.
According to the leaked slide, Barlow Pass will serve two different platforms, those being Whitley and Cedar Island. Whitley is a 2-socket Ice Lake-SP platform, while Cedar Island is a 4-socket Ice Lake-SP platform.
The slide shows Whitley has having 8-channel memory support and Cedar Island having 6-channel memory support. As it applies to each platform, Barlow Pass will deliver speeds of up to 3,200 MT/s and up to a 15 percent improvement in bandwidth, with a 15W thermal design power (TDP) rating.
Whitley will support up to 4TB per socket and be capable of taking advantage of the full 3,200 MT/s speed rating, while Cedar Island will support up to 3TB per socket and top out at 2,933 MT/s. The slide also indicates that Barlow Pass will ship in a blue colored full DIMM heatspreader "for better identification in the data center."
As for Cooper Lake-SP, it will be another iteration of 14nm. We have yet to know for sure how many cores and threads will be offered, though according to WCCFTech, it will scale to 48 cores and 96 threads in a socketed design, and 56 cores and 112 threads as part of the Xeon-AP family. We'll have to wait and see.
On the opposite end of the spectrum, Cisco's B200 M1/M2 blade server rack supports up to two Xeon CPUs and has 12 DDR4 DIMM slots (for up to 192GB of RAM), up to a 20Gbps I/O interconnect, and up to 600GB of internal storage.
It's not clear when all this will come out, though rumor has it we could be looking at a Q3 launch.